Teeth above the gums of 8-year-old children may be caused by retained milk teeth, multiple teeth and other reasons. 1. Retained milk teeth: If children’s permanent teeth begin to erupt, but the milk teeth do not fall out in time, there may be the case of teeth growing above the gums, usually the milk teeth will fall out on their own after a period of time, and the permanent teeth that grow outward can be returned to the normal position through orthodontics and other methods. 2. Multiple teeth: the etiology of multiple teeth is not clear, may be related to genetic factors, children may appear in the normal teeth outside the growth of another tooth, can be extracted through the guidance of the doctor multiple teeth. Children with teeth growing on the gums, it is recommended to take children to the regular hospital for diagnosis and treatment.